[IGNITE-18331] Design 'help' command

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Done
• Component/s: jdbc
• Labels: ignite-3
• Ignite Flags: Docs Required, Release Notes Required
• Assignee: Ivan Gagarkin
• Reporter: Ivan Gagarkin
• Created: 05/Dec/22 07:33
• Updated: 23/Jan/23 15:38
• Resolved: 23/Jan/23 15:38

Description

'help' command isn't standard command in SQL, but it would be nice to have it. We need to design and define what exactly we want to get. 

Examples: 

• MySQL: https://dev.mysql.com/doc/refman/8.0/en/help.html
• H2: https://www.h2database.com/html/commands.html#help